They are in the Exhaust pipe system, And have one single wire going to them.
Start up by the engine and work your way back the exhaust system and you will find them, I believe there is 3 in the system. Nothing after the muffler.
The O2 sensors are screwed into the exhaust system. Follow the exhaust backward from the engine and you will find the sensors.
There are 4. They are located on ether side of the catalytic converters.
89 5.0 has 2, o2 sensors.
A 2002 Chevy Cavalier 2.2 liter has a total of 1 oxygen sensor located in the exhaust manifold. It constantly monitors oxygen levels in the exhaust to allow the computer to make mixture adjustments.
The oxygen sensor on a 1999 Oldsmobile Intrigue 3.3 liter is in the exhaust manifold/pipes
There are four.
The 5.0 liter V8 has ( 4 ) oxygen sensors The 4.0 liter EFI ( which is an over head valve / pushrod design ) has ( 3 ) oxygen sensors Note: The 2 upstream oxygen sensors are used for adjusting the air / fuel ratio of the engine , the other oxygen sensor (s) are called catalyst monitors and monitor the performance of the catalytic converter(s)
any car after 1995 has two, or four oxygen sensors,as they use OBDII system
THERE ARE 4 O2 SENSORS. BOTH FRONT O2 SENSORS ARE LOCATED ON THE EXHAUST MANIFOLDS AND THE REARS AFTER THE MANIFOLD/CAT. BANK 1 SENSORS ARE LOACTED ON THE RIGHT SIDE OF THE ENGINE AGAINST THE FIREWALL. BANK 2 SENSORS ARE LOCATED ON THE LEFT SIDE OR RADIATOR SIDE.
That engine has 2 of them.
Two
V8, yes. Diesel, no.